Answer:
x=4
Step-by-step explanation:
In order to solve for x, we must isolate x on one side of the equation.
x+3x+5=21
First, combine like terms. x and 3x are both terms with variables, and can be combined.
(x+3x) + 5=21
4x + 5=21
5 is being added to 4x. The inverse of addition is subtraction. Subtract 5 from both sides of the equation.
4x+5-5= 21-5
4x= 16
x is being multiplied by 4. The inverse of multiplication is division. Divide both sides by 4.
4x/4=16/4
x= 16/4
x=4
Let's check our solution. Plug 4 in for x and solve.
x+3x+5=21
4+3(4)+5=21
4+12+5=21
16+5=21
21=21
This solution checks out, so we know our answer is correct.
x is equal to 4, x=4.
The binomial coefficients are 1,5,10,10,5,1 (5/0, 5/1, 4/2, 3/3, 2/4, 1/5)
x^5-25x^4+250x^3-1250x^2+3125x-3125
Answer:
3.5w
Step-by-step explanation:
√2 is irrational
a rational number Q can be expressed in the form 
where a and b are integers.
- 18 = 
⇒ rational
⇒ rational
3.14 = 
⇒ rational
√2 = 1.414213562...... ⇒ irrational
Answer:
toooook teaehes
Step-by-step explanation:
sedmee endm the worlds nssssssssssssss
